248 CYPERACE^J. Carex. 



acute, 3-nerved at base : perigynium olive-colored, triangular-ellipsoidal, turgid, 

 abruptly ending in a cylindrical purple beak with an obliquely cut entire conspicu- 

 ously hyaline orifice, nerved, divergent, longer than the scale : nutlet olive-colored, 

 triangular-obovoid. Boott, 111. i. 21, t. 57. C. Halseyana, Dewey, Am. Journ. 

 Sci. xi. 313, t. N, fig. 43. 



Swamps near Mendocino City (Bolander, n. 4741) ; also eastward from Massachusetts to Penn- 

 sylvania. 



63. C. amplifolia, Boott. Stem 2| to 3| feet high, sharply wing-angled, sca- 

 brous : leaves lanceolate, exceeding the stem, b to 8 lines broad : bracts 4 or 5 lines 

 broad, the lower two longer than the stem, the lowest sometimes with a sheath | 

 to 1 inch long : spikes 5 to 7, cylindrical, the one male purple and peduncled, 



2 to 3| inches long and 2 lines thick, the female ferruginous, 1^ to 3| inches long 

 and 2 or 3 lines thick, the upper subsessile, the lower peduncled, densely or at base 

 loosely flowered, the lowest occasionally remote on a scabrous peduncle 6 to 14 lines 

 long ; scales purple, pale in the middle, membranous, 3-nerved, oblong, the male 

 obtuse or short-cuspidate, the female emargiuate, with a longer cusp : perigynium 

 membranous, ferruginous, ellipsoidal, ventricose, glabrous, abruptly beaked, the beak 

 pale below and purple above with an oblique entire hyaline orifice, nerveless, reticu- 

 late, divergent, longer and broader than the scale : nutlet triangular-ellipsoidal, 

 chestnut-colored with pale angles, apiculate with the enlarged base of the style. 

 Hook. Fl. Bor.-Am. ii. 228, t. 226, and 111. i. 17, t. 48. 



In the Sierra Nevada ; Mariposa Grove (Bolander, n. 5011); Plumas County (Mrs. Austin) ; 

 northward to Oregon and Northern Idaho. 



64. C. Cherokeensis, Schwein. Stem 1 to 3| feet high, slender above, smooth : 

 leaves flat, 1 ^ to 2 lines broad, firm, shorter than or equalling the stem : lower bracts 

 sheathed, sometimes equalling the stem ; sheaths 1 to 1| inches long : spikes 5 

 to 11, pale, oblong-cylindrical, the 2 or 3 male 8 to 20 lines long and \ to 1 line 

 thick, the upper largest and rarely female at base, the lowest bracted ; female spikes 



3 to 9, 6 to 20 lines long and 3 or 4 thick, sometimes male at top, remote, the upper- 

 most often sessile, the rest exsertly peduncled and nodding, simple or the middle 

 spike of 2 or 3 clustered spikelets ; lower peduncle 2 or 3 inches long, setaceous, 

 scabrous ; scales lanceolate, the male obtuse, the female acute, acuminate or hispidly 

 cuspidate : perigynium membranous, pale straw-color, ovoid or lanceolate, attenuate 

 to a short beak with an obliquely cut entire hyaline orifice, inflated, obsoletely 

 nerved, smooth or sparingly toothed on the upper margins, longer and broader than 

 the scale : nutlet triangular-obovoid with concave sides, loosely invested by the peri- 

 gynium and half as long, punctate. Schwein. & Torr. Mon. Cyp. 369, t. 25, fig. 1 ; 

 Drej. Symb. 25, t. 12 ; Boott, 111. i. 31, t. 79. C. Christiana', Boott, Bost. Journ. 

 Nat. Hist. v. 115. 



On Santa Kosa Creek ( Thurber) ; eastward, from Alabama to Texas. 



65. C. "Whitneyi, Olney. Whole plant except the perigynium and scales 

 whitish or glaucous pubescent, the sheaths densely so : stem 1 to 3 feet high, erect, 

 acutely triangular : leaves 3 or 4 lines wide, shorter than the stem : bracts shorter 

 or the lowest a little longer than the stem : spikes 4, rarely 3 or 5, erect, whitish 

 green, the terminal male (rarely 2), oblong or cylindrical, rarely peduncled, the rest 

 female, without sheaths, rather loosely flowered, oblong, contiguous, the lowest 

 peduncled, rarely remote on a very long-exserted peduncle ; scales membranous, 

 ovate, cuspidate, ciliate at the apex, 3-nerved, green in the middle : perigynium 

 oval, acutely 3-angled, rostrate with slightly oblique emarginate hyaline orifice, 

 nerved, smooth, longer than or equalling the scale : nutlet ovate, acutely trique- 

 trous, conformed to and nearly as long as the perigynium, dark chestnut-colored. 

 Proc. Amer. Acad. vii. 394. 



In the Sierra Nevada, on dry hillsides ; Mariposa to Calaveras Counties, Brewer, Bolander. 



